to have / not have information about what is happening or where sb/sth is :
Bank statements help you keep track of where your money is going.
I lost all track of time (= forgot what time it was) .
to have / not have information about what is happening or where sb/sth is :
Bank statements help you keep track of where your money is going.
I lost all track of time (= forgot what time it was) .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005